Gear racks
Gear racks are used to convert rotating motion into linear movement. A equipment rack has straight teeth cut into one surface of a square or round section of rod and operates with a pinion, which is definitely a small cylindrical equipment meshing with the gear rack. Generally, gear rack and pinion are collectively known as “rack and pinion”. There are many ways to use gears. For example, as demonstrated in the picture, a gear is used with the gear rack to rotate a parallel shaft.
To provide many variants of rack and pinion, Ever-power has many types of equipment racks in share. If the application requires a long size requiring multiple equipment racks in series, we have racks with the tooth forms correctly configured at the ends. They are described as “equipment racks with machined ends”. When a gear rack is created, the tooth cutting procedure and heat treatment process could cause it to try & walk out true. We can control this with particular presses & remedial processes.
There are applications where the gear rack is stationary, as the pinion traverses and others where the pinion rotates upon a fixed axis while the gear rack moves. The former is used widely in conveying systems as the latter can be used in extrusion systems and lifting/lowering applications.
As a mechanical component to transfer rotary into linear movement, gear racks tend to be in comparison to ball screws. There are advantages and disadvantages for using racks instead of ball screws. The advantages of a equipment rack are its mechanical simplicity, huge load carrying capacity, no limit to the distance, etc. One disadvantage though is the backlash. The benefits of a ball screw will be the high precision and lower backlash while its shortcomings are the limit in size due to deflection.
Rack and pinions are used for lifting mechanisms (vertical movement), horizontal movement, positioning mechanisms, stoppers and to let the synchronous rotation of a number of shafts in general industrial machinery. On the other hand, they are also found in steering systems to change the direction of cars. The features of rack and pinion systems in steering are the following: simple structure, high rigidity, small and lightweight, and exceptional responsiveness. With this mechanism, the pinion, installed to the steering shaft, is usually meshed with a steering rack to transmit rotary movement laterlly (transforming it to linear movement) to ensure that you can control the wheel. Furthermore, rack and pinions are used for many other purposes, such as playthings and lateral slide gates.
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Gear rack, when used with spur gears, converts rotary movement into linear motion. Gear rack from Ever-power is designed to operate with our stock 14 1/2° and 20° PA spur gears.
Often, gear rack is modified to match specific applications. This might include drilling and tapping mounting holes, cutting to specific lengths or complementing ends of two pieces of rack to make a continuous length longer than stock.
· Ever-power’s gear rack will come in 14 1/2° and 20° PA to match an array of application requirements.
· Stocked in 4ft and 6ft lengths
· The choice of 48 to 3 DP meets an equally different array of needs.
· Length tolerance enables ends to end up being matched for easy modification.
· Our in-share inventory of nylon, and metal ensures availability – and compatibility.
· Because it is flawlessly matched to Ever-power’s spur gears, our gear rack promises superior efficiency.
Gear Racks – Changes Rotational Movement into Linear Motion

Racks are portions of a cylindrical disk with an infinite radius which includes involute shaped the teeth cut into its encounter. Racks mate exclusively with spur gears that have the same module, pressure angle and preferably face width. EVER-POWER offers gear racks in many components, configurations, modules and lengths. One unique feature of our racks is that most are given finished ends. This type of production allows for multiple racks to end up being butted, end-to-end, to create one continuous amount of rack. Many of the products that people offer allow for secondary procedures such as for example reduction of the space, the adding of tapped holes, or the use of heat therapy. Our offering also contains products which have already had a few of these secondary functions completed. The products are identified by a “J” in their part number plus they are offered within 10 calendar days.
The straight tooth cylindrical gear that the radius of the pitch cylinder is infinite and in a bar form is called a gear rack. If it’s sorted by the positions of the apparatus shafts, it belongs to the parallel shaft category. The spur gear that meshes with a equipment rack is generally called a pinion.
Besides equipment racks with straight series tooth, there are helical racks that have slanted teeth. Helical gear racks are paired with helical gears, but due to the slant of the tooth path, as in helical gears, the mesh generates axial thrust forces.
Among the gear racks’ main applications are machine tools and transport devices and when the applications involve transmitting linear motions, they are often compared with ball screws. In those situations, the main advantages of gear racks could be named this kind of as having the ability to meet a heavier load by using larger modules and having no length limitation by connecting equipment racks with completed ends. However, an example of the disadvantages of gear racks includes the occurrence of backlash.
When manufacturing equipment racks, because of their bar shape, bending often results. In such cases, corrective processes using presses are often employed.
As for the form of gear racks, aside from the usual bar shape, there are circular racks where the cross sections are circular and flexible racks which can be bent into totally free curve shapes.
Racks Categories
EVER-POWER stock racks are created for high precision linear motion applications. You can expect a large selection of racks ranging from module 0.5 to 10 and lengths from 100 to 2000 mm.
Hardened Ground Racks (MRGF – MRGFD)
Has the highest strength and precision in the EVER-POWER standard rack series. Bolt holes could be remachined as carburizing is usually applied just within the tooth region. J Series items are also available.
Hardened Surface Racks (KRGF-H – KRGFD-H)
Heat treated ground gears with high precision and strength has exceptional cost-performance ratio. J Series items are also available.
Steel Racks (SR)
Low cost, huge selections of modules and number of teeth. J Series products are also available.
STAINLESS Racks (SUR·SURF·SURFD)
Ideal for food machinery due to SUS304 materials\’s rust-resistant quality.
Brass Racks (BSR)
Small pitch racks manufactured from free-cutting brass, exceptional workability and high rust resistance.